TM 5-3805-293-23-2
0023
Table 1. Cab Electrical Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
4. One or Both Headlights
3. Turn control indicator switch to
Headlight or Headlights Do Not
Do Not Operate in High
position SER. DRIVE, dimmer
Operate in High Beam - Repeat trou-
Beam - Continued
switch to high beam (TM 5-3805-
bleshooting from the beginning.
293-10) and verify headlights
Both Headlights Operate in High
operate in high beam.
Beam - Troubleshooting complete.
Test Step 8. Check for Open Cab
Lower Wiring Harness.
1. Remove head lamp relay (WP
0009, Figure 298) from head lamp
relay socket (WP 0009, Figure
299).
2. Connect jumper wire between
head lamp relay socket (WP
0009, Figure 299) terminals C14
and E13.
3. Using digital multimeter, measure
Resistance Less Than 5.0 Ohms -
resistance between cab lower wir-
Proceed to Test Step 9.
ing harness connector P-C11 (WP
Resistance 5.0 Ohms or Greater -
0009, Figure 286) terminal 6 and
Replace cab lower wiring harness
machine ground. Resistance
(WP 0266).
should be less than 5.0 ohms.
Remove jumper wire between head
lamp relay socket (WP 0009, Figure
299) terminals C14 and E13.
Install handleable relay (WP 0009,
Figure 298) to handleable relay
socket (WP 0009, Figure 299).
Connect the control indicator harness
connector PE-C11 (WP 0009, Figure
287) to cab lower wiring harness con-
nector P-C11 (WP 0009, Figure 286)
(WP 0283).
Connect the connector AZ-C1 (WP
0009, Figure 387) to left headlight and
install headlight assembly (WP 0197).
Proceed to step 4.
4. Turn control indicator switch to
Headlight or Headlights Do Not
position SER. DRIVE, dimmer
Operate in High Beam - Repeat trou-
switch to high beam (TM 5-3805-
bleshooting from the beginning.
293-10) and verify headlights
Both Headlights Operate in High
operate in high beam.
Beam - Troubleshooting complete.
0023-23
